Problem accessing ZCS upstream server. Cannot connect to the ZCS upstream server. Connection is refused.
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@nagendra said in Problem accessing ZCS upstream server. Cannot connect to the ZCS upstream server. Connection is refused.:
@nagendra increasing memory to 32 Gig will slove the issue ??
No, looks like you have enough. But you have an IOWait issue. So you need to figure out why. What is causing your disks to freak out?
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@nagendra said in Problem accessing ZCS upstream server. Cannot connect to the ZCS upstream server. Connection is refused.:
@scottalanmiller what should i do ??
Figure out what is using your disks. Your system is spending most of its time dealing with storage issues.
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@scottalanmiller i found that there was some hourly backup was running .. it that causing the issue...
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@nagendra said in Problem accessing ZCS upstream server. Cannot connect to the ZCS upstream server. Connection is refused.:
@scottalanmiller i found that there was some hourly backup was running .. it that causing the issue...
That could easily do it, especially if it is not able to complete within the hour window and has overlapping backup jobs.
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@scottalanmiller correct i stopped the backup process and changed it to daily 2200 HRS backup.. uff thanks scott...
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@nagendra said in Problem accessing ZCS upstream server. Cannot connect to the ZCS upstream server. Connection is refused.:
@scottalanmiller correct i stopped the backup process and changed it to daily 2200 HRS backup.. uff thanks scott...
Did that fix the IOWait issue? sar should show it going down in a few minutes.
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@scottalanmiller
yes
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Awesome, that was easier than I was guessing that it was going to be.
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thanks @scottalanmiller
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Glad that we were able to track that down easily
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What backup system are you using? or script for that matter.
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@dbeato said in Problem accessing ZCS upstream server. Cannot connect to the ZCS upstream server. Connection is refused.:
What backup system are you using? or script for that matter.
And how much is being backed up? Might be too much.
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@scottalanmiller you mean size ?? its around 2 GB every hour. it worked for almost 1 day but next day this issue started .. nvm i will start backup every nite or every 6 hrs
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@nagendra said in Problem accessing ZCS upstream server. Cannot connect to the ZCS upstream server. Connection is refused.:
@scottalanmiller you mean size ?? its around 2 GB every hour. it worked for almost 1 day but next day this issue started .. nvm i will start backup every nite or every 6 hrs
That's not very much. That should take no time at all. Any idea why it is so slow?
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@nagendra Okay but what backup are you using? 2 GB per hour is not that bad what we might need to know is the underlying storage and hardware.
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@dbeato said in Problem accessing ZCS upstream server. Cannot connect to the ZCS upstream server. Connection is refused.:
@nagendra Okay but what backup are you using? 2 GB per hour is not that bad what we might need to know is the underlying storage and hardware.
And what tool are you using for the backups? Veeam Endpoint? R&R?
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@scottalanmiller am using shell script for backup...
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@nagendra said in Problem accessing ZCS upstream server. Cannot connect to the ZCS upstream server. Connection is refused.:
@scottalanmiller am using shell script for backup...
Understood.
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@nagendra Okay are you using any of this?
https://github.com/lucascbeyeler/zmbackup
https://wiki.zimbra.com/wiki/Open_Source_Edition_Backup_ProcedureI use the first link with a slightly modified backup of the mailboxes deleted items since the hot backup doesn't backup those folders (This is the opensource version).
